An upper limit to the electric dipole moment of the neutron from lattice QCD

Details An upper limit to the electric dipole moment of the neutron from lattice QCD An upper limit to the electric dipole moment of the neutron from lattice QCD

2005-10-11

arxiv.org/abs/hep-lat/0510067v1

Nucl.Phys.Proc.Suppl.164:256-259,2007

Physics

High Energy Physics

High Energy Physics - Lattice

4 pages, 3 figures, talk presented at QCD05 (Montpellier) 4-9 July

Scientific paper

10.1016/j.nuclphysbps.2006.11.05

A linear increase with the volume of the topological susceptibility can
signal spontaneous breaking of parity and time inversion, due to a nonzero
vacuum expectation value of the topological charge. Such a breaking would
produce a nonzero electric dipole moment of the neutron, d_n. An upper limit to
d_n is derived from numerical simulations at increasing volumes.

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